Pump.



Patented Mar. 18, 1913.

H. J. d'5 W. E. POLLACEK.

PUMP.

APPLICATION FILED JAN.12,1912. LOQ.

mw. @UWM Ammer UMTED 'STATES PATENT OFFICE.

lrimani( J. roLLacaxANn'wILLmu n. PoLLAcnx, or Naw Yoan, n. r.

v mr.

, speciacanon of Letters raient. 'Patented Mar, 18, 1913, appnemon'mea-1anuary 1 2, 1912. serial No. 670,844.

To all whom z'tl may concern:

Be it known that we, HERY J. PoLLAcnK and WILLIAM E. POLLACEK, citizens of the United States, residing at New York, in the county of New York and State of New York,

have invented new and useful Improvements in Pumps, of which the following is a speelfication. i Y

This invention relates to sewage flush systems and more especially to airvalves-used in connection with same and the object of the invention is to provide valves adapted to either provide a retaining'tank with sulficient Aair pressure to flush and empty vsamev orto permit ofthe escape of the air ywhen the sewage is accumulating in the tank, the operationI of the valve being automatic andcontrolledby electrical means, as will be hereinafter more fully explained in'the following speciication, Aset forth in the claim and illustrated in the drawing, wherein .a partly sectional view of a lsewage plant 1s shown'provided with the improved valves and the electrical connections.

In the drawing, accumulate the sewage entering same through pipe 6, from any desired source and having the check-valve 7 to prevent the re,- turn of the sewage when it once passes. An outlet pipe 8 is also 'provided with a valve I9, which may bev below the ordinary valve 9 prevents the return of any of the sewage after it has been forced outward.

Within the tank 5 is a vertical moving rod 10 journaled in the top of the tank and guided at its lower end' by a bracket 11. This rod is also provided with stops or collars 12 within the tank and similar collars 13 on the outside of the tankbetween which is located the fork of a lever 14. The rod also carries' a iioat 15, adapted to rise and fall with-the sewage in the tank and make contact with one or the other of the stops 12 soas to move the rod'10 up or down. The oat 15 is shown at an intermediate point between the two-stops but as the sewage rises, the oat eventually strikes the upper stop and elevates the rod 10 so that the stops 13 turn the lever 14 on its pivot and throws a switch 16 so` as to complete an electric circuit 17 and energize the solenoid 18 drawing the core 19 downward and tilting the llever 20 which carries the valve stem 21 at its outer end.

The valves 22 and 23 are4 carried within 'ceiving its air 'from the tank 5 is provided to so that the check` casings 24 and 25 having the usual seats rior the valves and both connected with-the tank 5'by means of pipes 26 and 27. The valve casing 25 is also connected by meansof a pipe 28 with a compressed air tank 29 rea compressor 30 or any other desired source and the casing 24 is provided with a pipe 31 which exhausts the air from the tank 25. A

The drawings show the sewage accumu-` lating in the tank 5 and as soon as the float strikes the upper stop 12, the switch 16 will. be thrown so as to complete the circuit 17,

the lever 20 will be drawn down, elevating the .valves 22 and 23, closing the former and opening the latter. The escape of air is therefore prevented by fie closing of the valve 22, while the compressed air instantly rushes through the casing' 25 and into the tan'k 5, forcing the sewage out through the valve 9 and outlet 8 to any desired point.,

.'As the sewage is expelled, the lioat 15 descends until it strikes the stop 12 at a point just above the out-let and-inlet ipes so that no air is allowed to escape anxd the slown-v ward movement of the rod. 10 causes the switch 16 to break the circuit 17 releasing the core 19, the spring closing valve 23 and opening `the valve 22, which permits the -air lto leave the tank and the sewage to again accumulate. l

This automatic device is very useful. for the accumulation of sewage to be expelled at a much higher point than is possible from a natural iiow and is especially useful in buildings having sub-cellars or where sewaccumulates at a very low point which is if o en the case in systems and where municilpalsewers are but a few feet below the sur` face'. This device may also ,be found useful in the automatic handling of other liquids where it is necessary to carry them to high points about a plant as they accumulate in tanks.

Wise arranged and modi ed without departing from the 'essential features above described.

What we claim as new and desire to secure by Letters Patent is,-

A sewage-level control system com rising a sewage. tank having valve control edin` take and discharge pipes, ,a compressed 'air reservoir, a valve' casing having two communicating chambers, one of which is connected withsaid sewage tank and the other -It is obvious that the arts may be otherof which. is connected with said compressed alr reservoir, a second valve casing having two communicating chambers one of which is connected with said sewage tank and the other of which is open to the outer air, valves arranged in said Valve casings 'and controlling the communication between the chambers therein, a valve stem common -vto and carrying said valves, said valves being so arranged that when the opening bet-Ween the chambers in one casing is closed, the chambers in the other casing are in communication, a solenoid provided with a plunger, a lever connecting said plunger and valve stem, a float resting on 'the surface of the sewage 1n sald sewage tank, and means operated by said oat for controlling the current through said solenoid and thereby alternately connecting said sewage tank with said compressed air reservoir and the outer air.

In testimony whereof we affix our signatures in presence of two witnesses.l

- HENRY J. POLLACEK.

WILLIAM E. POLLACEK. Witnesses:

JAMES F. DUHAMEL, THEO. H. FRr'END. 

